*{
    margin: 0px;
    padding: 0px;
    list-style: none;
    font-family: sans-serif;
    --theme: rgb(91, 167, 255);
    --theme-dark: rgb(41, 87, 125);
}

body{
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
}
        
.back{
    display: block;
    float: left;
    width: 50px;
    height: 50px;
    text-align: center;
    font-family: monospace;
}
a{
    color: var(--theme);
}
.links{
    text-align: center;
    padding: 10px;
}
.buttons{
    width: 90%;
    margin: 5%;
    display: flex;
    flex-direction: row;
    justify-content: space-around;
}
.largebutton{
    width: 40vw;
    height: 50px;
    font-size: 20px;
    line-height: 50px;
    
}
.buttonblue{
    background-color: var(--theme);
}
.buttonblue:active{
    background-color: var(--theme-dark);
}

.buttonorange{
    background-color: orange;
}        
.buttonorange:active{
    background-color: darkorange;
}
.header{
    width: 100%;
    height: 50px;
    box-sizing: border-box;
    line-height: 50px;
    background-color: var(--theme);
}
.header>*{
    text-align: center;
    font-weight: bolder;
    font-size: 18px;
    color: white;
}

.themetext{
    color:var(--theme);
}

.commonbutton{
    color: white;
    font-size: 15px;
    line-height: 30px;
    border-style: none;
    border-radius: 3px;
    text-align: center;
}

.commonbutton{
    box-shadow: 0px 3px 3px 0px rgba(0, 0, 0, 0.445);
    transition: 400ms;
}

.commonbutton:focus{
    
    border-style: none;
}
.commonbutton:active{
    border-style: none;
    box-shadow: 0px 3px 8px 0px rgba(0, 0, 0, 0.445);
    transition: 400ms;
}


.flexspace{
    flex-grow: 1;
}

.input{
    margin: 5px;
    margin-left: 20px;
    margin-right: 20px;
    height: 80px;
    padding: 10px;
    text-align: left;
    border-bottom: solid var(--theme) 2px;
    overflow: auto;
}
.hint{
    font-size: 30px;
    margin-left: 20px;
}
#input{
    font-size: 60px;
}

.key{
    margin: 3px;
    border-radius: 3px;
    background-color: white;
    font-size: 40px;
    font-weight: bolder;
    display: flex;
    justify-content: center;
    align-items: center;
}


.key:active{
    background-color: lightgray;
}

.btnok{
    background-color: var(--theme);
}
.btnok:active{
    background-color: var(--theme-dark);
}